Stop and waste valve



Patented Mar. 31, 1885.

Witnesses Ira/eater;

07 fiw/w 181mm gm GIMQXBMQ UNITE STATES PATENT OFFICE.

PATRICK HARVEY, OF CHICAGO, ILLINOIS.

STOP AND WASTE VALVE.

EPECIFICATION forming part of Letters Patent No. 314,836, dated March31, 1885.

Application filed September 22, 1884.

To all whom it may concern:

Be it known that I, PATRICK HARVEY, a citizen of the United States,residing at Ohicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Stop and \Vaste Valves,which are fully described in the annexed and following specification.

The purposes of this invention are to provide an automatic stop andwaste valve which shall prevent the waste of water from the mainsthrough such stop and waste valve, as sometimes occurs with forms ofsuch valves now in use, to prevent the possibility of the entrance ofbackwater from the sewer through the stop and waste valve when it isopen for the purpose of emptying the system with which it is connected,and to prevent passage of sewergas through the same.

The drawing is a vertical section of my invention wherein the valve liesand plays horizontally.

A is the water-supply pipe. B is the servicepipe leading to the systemsupplied and controlled by the valve. 0 is the stop and waste valvechamber. D is said valve. D is its stem. E is a portion of thewaste-pipe'forming a supplemental chamber surrounding the valve-stein D.E is the eduction-port from said chamber E. It is closed by theautomatic valve E, opening outward into the chamber E and arranged to bechecked by the guard E so as not to be caught and detained off its seat.15) is the final eduction-pipe leading to the sewer through theeduction-port 6 The valve D plays between the seats 0 and c-the formerat the induction or supply port I), and the latter at the eduction orwaste port 6. Both seats are provided with yielding packing 9 g, ofleather or rubber which is bound into place between the shoulders O andO of the valve-chamber C, and the shoulders a and e of the supply-pipe Aand the waste-pipe E, respectively. The valve D terminates in thetongues d and d, which act as pistons, which pass through the aperturesof the elastic packing 9 g and fit closely within the induction andwaste pipes,respectively, entirely closing them, while the shoulders 01and d of the valve D bear positively against the inner surface of saidpacking-pieces g and g and force them against the valve-seats c and c.The taper- (No model.)

ing or, as illustrated, spherical portion, of the tongues d and d, whichterminates them, is not to be considered a part of the length of thesaid valve or tongues in considering the action of the valve, the solepurpose of said ta pering part being to facilitate the entrance of thevalve within the aperture of the packing g g. The distance between thetwo seats 0 and c is greater than the distance between the two shouldersd and d by an amount less than the sum of the lengths of the two pistontongues d and d, and greater than either one, so that it is possible forthe valve to stand in such position as to close both apertures at thesame time, and also possible to have either one open while the other isclosed by the valve. From this structure it results, also, that it isimpossible to have both apertn res open at once, since when the valve Dis moved to open the waste-port to effect drainage of the system, suchmovement will cause its piston-tongue cl to enter and close thesupply-port b before its piston-tongue dhas fully withdrawn from andopened the waste-port e.

The valve E is designed to be of specific gravity greater than water, soas to be nor mally on its seat, except when lifted oii' by a passingcurrent of water. Should there occur a back-pressure of water or gasfrom the sewer at a time when the waste-port e is open for the purposeof draining the system, such back-pressure will at once firmly seat thevalve E and prevent the entrance into the chamber E of the gas or foulwater, and will so detain it until and unless the pressure of water inthe pipes after the valve D has been shifted to open the supply-port andagain shifted to open the waste-port should be greater than theback-pressure from the sewer, in which case such greater pressure willtend to cleanse the sewer.

The valve-stem D protrudes through suitable stuffing-box at the end ofthe chamber E. F is a lever pivoted to any fixed support, and having oneend passed through the slot (1 in the valve-stem D, so that it mayactuate said valve in either direction. The other end of the said leveris connected by suitable pullrod or cable G to any point from which itis desired to control the valve D. The arm F of said lever is weighted,said weight H being adjustable on said arm, so that when not re- ICO.pipe and service-pipe, and a'waste-pipe con1- strained by the cable Git may exert sufficient pressure to retain the valve on its seat,closing the supply-port against the supply-pressure.

I claim- 1. In combination with a water-supply pipe and a waste-pipe, avalve-chamber located and affording communication between the two, and avalve playing in such chamber apd adapted to pass through and close atone end the supply-port and at the other end the wasteport, and longerthan the distance between said ports, said valve provided withbearingshonlders, and said chamber provided with bearing-seats for saidshoulders at the margin of said ports, respectively, the distancebetween said seats being greater than the distance between saidshoulders and less than the distance from either shoulder to theopposite end of the valve, substantially as set forth.

2. The combination, with a water-supply municating therewith, and a stopand waste valve controlling such communication, of an automaticcheck-valve in the waste-pipe beyond the stop and waste valve,substantially as set forth.

3. In combination with the water-supply pipe, service-pipe, andwaste-pipe, the chamher 0, communicating between the two, the valveD,playing within said chamber, the supplemental chamber E, having theeductionport E, and the automatic valve E closing said eduction-port andopening outward, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand, in the presence 0f,twowitnesses, at

Chicago, Illinois, this 17th day of September, 7

PATRICK HARVEY.

Attest: FRANCIS W. PARKER, CHAS. S. BURTON.

